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- Students will be able to use given numbers to add up to 20 and then be able to subtract down to zero again.
- Divide the class into even teams in an outside area or gym.
- Give each team a die.
Beginning: Review the number names from 1-6. Flash the dot pattern as it appears on the die for each number. Tell students to show you that many fingers, and call out the number name chorally.
Intermediate: Teach students that the word "die" is a homonym, a word that sounds the same but means different things. The word "die" can mean to pass away. Another meaning of die is the singular form of "dice" which students will use to play the game. Point to the die.
Explicit Instruction/Teacher modeling(5 minutes)
- Explain the rules of the game to your students: To practice adding up to 20, they will be rolling a die and the whole team will be performing a physical activity dependent on what number they roll. Direct their attention to the poster board. Go through the activities and the numbers they correspond to. Instruct students to record the numbers as they roll, and the running total, on their writing pad.
Beginning: Include a drawing or photo of each of the exercizes. Assess that students understand by calling out an exercize and having students do it before they begin the activity.
Intermediate: Display the sentence frame, "If we roll ____, the we do ____ ____ (number, exercize). Direct students to review the rules for the activity with a partner before playing.
Guided Practice(5 minutes)
- Instruct the students to take turns rolling the dice
- Remind groups to have one student keep a running total until they reach their goal of 20, then another student can keep track for the next round.
Beginning: Model the activity with a small group before excusing students to play.
- Display the steps for the activity for reference: 1) Roll the die 2) Record the number 3) Do the movement 4) Continue until you reach 20 5) Next student takes a turn rolling the die
Independent working time(15 minutes)
- Once students reach their goal of 20, have them start to work backwards and roll their die to subtract down to zero.
- Provide students with tools such as manipulatives and number lines to track progress.
- Observe that all students understand the activity and are actively engaging. Reteach the instructions for the activity as needed.
Intermediate: Create an anchor chart that includes the plus, minus and equal sign symbols. Review the meaning of the symbols, and encourage students to write equations to track their progress from zero to 20, and back to zero.
- Enrichment: Have students work towards a larger goal number using addition or subtraction.
- Support: Have students start out with a smaller goal number or give them a number line to help them with counting.
- Look over writing pads and watch students as they do the activity to check that they are understanding how to add up the numbers.
- Observe that students do the correct exercize for each number rolled.
- Check that students have a system, such as tally marks or writing equations, to track progress as they add to 20.
- Prompt students to describe the activity using the conditional tense with questions such as, "If you roll 6, which exercize will you do?"
- Assess that students are able to add and subtract accurately within 20.
Review and closing(5 minutes)
- The teacher will observe and check in with each group to make sure students are grasping the concept of adding with the die and working together as a team.
- Ask students what was easy or hard about the activity using the sentence frames:
- ____ was easy.
- ____ was hard.
- Allow students time to reflect on how it felt to work with their group. Provide the sentence stems:
- Working with my group was fun because ____.
- Working with my group was challenging because ____.